Glass and digitizer is basically only the touch screen and glass but not the LCD. It sounds like the LCD is no good judging from what you said. How did you separate the glass from the LCD?
Because they are stuck together with very strong glue that requires heating and tools that do not scratch or damage the LCD, also takes a long time to take them off without cracking the LCD.
Either way you need to replace the whole front display assembly as LCD + Digitizer + Glass preassembled (Definitely better to get with front display frame pre-assembled too).
You can buy the screen on iFixit, eBay / eTradeSupply / Eddogo / Parts4Repair and other such stores. Make sure you get the correct model for your phone and definitely get it with LCD + Digitizer at least because the LCD is definitely broken.